100% uptime for a web application""if you're going to use our website, do not use Comcast/Roadrunner/whomever as your ISP because they will ignore our TTL settings"" Since when ISP like Comcast/Roadrunner/whomever force their clients to use their DNS resolvers? If some ISP proposes a broken DNS service, just tell people to avoid the DNS service. And of course if some ISP starts to filter DNS request to force their customers to use their own DNS resolver, then it's the customers responsibility to put pressure on the ISP to stop doing that, or else to switch ISP for breach of contract.

Does Linux really need Anti-Virus (other than hosted file scanning)"put the terms "virus" in context." Indeed. If they cannot even spell-out the many specific types of malicious softwares (some distinctions are not always clear, such the boundary between virus and worm, but the distinction between self-replicating and non propagating malware is IMO essential)... to me it means they are repeating buzzwords or phrases they heard ("must have AV installed").